Tehuantepec Forecast



April 19, 2019, 2:30 pm (UTC: -07:00)
Subject: Tehuantepec Forecast


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This forecast has not been reviewed. It was generated from an automatic model.

...GALE WARNING...
.N OF 14N BETWEEN 94W AND 96W...INCLUDING GULF OF
TEHUANTEPEC...N TO NE WINDS 30 TO 40 KT. SEAS 9 TO 13 FT
BUILDING TO 17 FT. ELSEWHERE N OF 11.5N BETWEEN 93.5W AND 96.5W
N TO NE WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.
.24 HOUR HOUR FORECAST N OF 11.5N BETWEEN 94.5W AND
97.5W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 30
KT. SEAS 10 TO 13 FT. ELSEWHERE N OF 8.5N BETWEEN 93W AND 100W
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT.
.33 HOUR FORECAST N OF 14N BETWEEN 94.5W AND 96.5W...INCLUDING
GULF OF TEHUANTEPEC...N TO NE WINDS 25 TO 35 KT. SEAS 8 TO 11
FT. ELSEWHERE FROM 07N TO 14N BETWEEN 94.5W AND 102W WINDS 20 KT
OR LESS. SEAS 8 TO 9 FT IN MIXED NE AND NW SWELL.
.42 HOUR FORECAST N OF 12.5N BETWEEN 94.5W AND 97W N TO NE WINDS
20 TO 25 KT. SEAS 8 TO 9 FT. ELSEWHERE FROM 07N TO 10.5N BETWEEN
99W AND 104W WINDS 20 KT OR LESS. SEAS TO 8 FT IN NW SWELL.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.SYNOPSIS AND FORECAST.

.FROM 07N TO 10N BETWEEN 132W AND 137W NE WINDS 20 TO 25 KT.
SEAS 9 FT. ELSEWHERE FROM 06N TO 13N W OF 129W WINDS 20 KT OR
LESS. SEAS 8 TO 9 FT IN NE SWELL.
.24 HOUR FORECAST FROM 05N TO 14.5N W OF 134.5W NE WINDS 20 TO
25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 6.5N TO 20N W OF 135W WINDS 20 KT OR
LESS. SEAS 8 FT IN NE SWELL.

.GULF OF CALIFORNIA 18 HOUR FORECAST FROM 29N TO 30N W OF 114W
SW TO W WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.30 HOUR FORECAST FROM 29.5N TO 30.5N W OF 113W SW TO W WINDS 20
TO 25 KT. SEAS LESS THAN 8 FT.
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

.30 HOUR FORECAST FROM 10N TO 11.5N E OF 88W...INCLUDING GULF OF
PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.42 HOUR FORECAST FROM 09N TO 11.5N E OF 91W...INCLUDING GULF OF
PAPAGAYO....NE WINDS 20 TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST FROM 09N TO 11N E OF 90W...INCLUDING GULF OF
PAPAGAYO....NE WINDS 20 TO 25 KT. SEAS TO 8 FT.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

CONVECTION VALID AT 2100 UTC FRI APR 19...

.SCATTERED MODERATE WITHIN 60 NM OF 09N110W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
TROUGH EXTENDS FROM 06N85W TO 07N90W TO 07N96W TO 06N102W. ITCZ
EXTENDS FROM 06N102W TO 05N120W TO 05N130W TO BEYOND 04N140W.
SCATTERED MODERATE ISOLATED STRONG FROM 01N TO 10N E OF 103W AND
FROM 0N TO 07N W OF 126W.

.N OF 14N BETWEEN 94W AND 96W...INCLUDING GULF OF
TEHUANTEPEC...N TO NE WINDS 30 TO 40 KT. SEAS 9 TO 13 FT
BUILDING TO 17 FT. ELSEWHERE N OF 11.5N BETWEEN 93.5W AND 96.5W
N TO NE WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.
.24 HOUR HOUR FORECAST N OF 11.5N BETWEEN 94.5W AND
97.5W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 30
KT. SEAS 10 TO 13 FT. ELSEWHERE N OF 8.5N BETWEEN 93W AND 100W
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT.
.33 HOUR FORECAST N OF 14N BETWEEN 94.5W AND 96.5W...INCLUDING
GULF OF TEHUANTEPEC...N TO NE WINDS 25 TO 35 KT. SEAS 8 TO 11
FT. ELSEWHERE FROM 07N TO 14N BETWEEN 94.5W AND 102W WINDS 20 KT
OR LESS. SEAS 8 TO 9 FT IN MIXED NE AND NW SWELL.
.42 HOUR FORECAST N OF 12.5N BETWEEN 94.5W AND 97W N TO NE WINDS
20 TO 25 KT. SEAS 8 TO 9 FT. ELSEWHERE FROM 07N TO 10.5N BETWEEN
99W AND 104W WINDS 20 KT OR LESS. SEAS TO 8 FT IN NW SWELL.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.


GULF OF TEHUNATEPEC GALE WARNING: THE GALE FORCE WINDS HAVE
BEGUN TO FUNNEL THROUGH THE CHIVELA PASS AND OUT ACROSS THE GULF
OF TEHUANTEPEC AS OF 12Z THIS MORNING. AS THE PRESSURE GRADIENT
TIGHTENS FURTHER OVER SOUTHEASTERN MEXICO LATE TONIGHT, EXPECT
FOR THE PRESENT NORTH TO NORTHEAST 30-40 KT GALE FORCE WINDS TO
INCREASE TO 35-45 KT ALONG WITH WAVEHEIGHTS PEAKING AT ABOUT 18
FT. THE GRADIENT WILL SLACKEN JUST A LITTLE BY EARLY SAT
AFTERNOON ALLOWING FOR THE GALE FORCE WINDS TO DIMINISH TO JUST
UNDER MINIMAL GALE FORCE, HOWEVER, A PULSE OF MINIMAL GALE FORCE
WINDS IS EXPECTED SAT NIGHT BEFORE THE GRADIENT BEGINS TO
SLACKEN AS HIGH PRESSURE OVER THE WESTERN GULF OF MEXICO WEAKENS
WHILE SHIFTING EASTWARD. WINDS OVER THE GULF OF TEHUANTEPEC WILL
RESPONSE BY DIMINISHING TO JUST BELOW GALE FORCE EARLY ON SUN,
THEN BECOME LIGHT AND VARIABLE DURING SUN AFTERNOON. SEAS IN THE
GULF OF TEHUANTEPEC WILL LOWER TO BELOW 8 FT ON SUN AFTERNOON.
THE LEADING EDGE OF THE 8 FT SEAS THAT WILL PROPAGATE DOWMSTREAM
FROM THE GULF WILL REACH NEAR 06N BETWEEN 98W AND 105W BY EARLY
SUN, AND SUBSIDE TO LESS THAN 8 FT ON SUN AFTERNOON. PLEASE READ
THE PACIFIC HIGH SEAS FORECAST UNDER THE AWIPS HEADER MIAHSFEP2
AND UNDER THE WMO HEADER FZPN03 KNHC FOR MORE SPECIFIC MARINE
DETAILS.

GULF OF TEHUANTEPEC: PLEASE READ THE SPECIAL FEATURES SECTION
ABOVE FOR A RECENTLY STARTED STRONG GALE FORCE WIND GAP EVENT.

SHORT-TERM TEHUANTEPEC
TODAY - NNW 28-39, Seas SSW 7-11 feet @ 15sec
TONITE - N 25-34, Seas NNW 8-13 feet @ 6sec
SATURDAY - N 24-33, Seas NNW 8-13 feet @ 7sec
SATURDAY NIGHT - N 18-25, Seas SSW 6-10 feet @ 13sec

LONG-TERM TEHUANTEPEC
SUNDAY - N 18-25, Seas SSW 6-10 feet @ 13sec
MONDAY - SW 10-14, Seas SSW 3-5 feet @ 15sec
TUESDAY - SSW 10-14, Seas SSW 3-5 feet @ 14sec
WEDNESDAY - SW 8-10, Seas SW 3-5 feet @ 15sec
THURSDAY - SW 5-8, Seas SW 3-5 feet @ 14sec